From floods to droughts, erratic weather patterns are affecting food security, with crop yields projected to fall if changes are not made

Experts have warned that the world’s ability to feed itself is under threat from the “chaos” of extreme weather caused by climate change.

Crop yields have increased enormously over the past few decades. But early warning signs have arrived as crop yield rates flatline, prompting warnings of efficiency hitting its limits and the impacts of climate change taking effect.